Is CVE-2025-6011 in the CISA KEV catalog?

No. CVE-2025-6011 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-6011?

CVE-2025-6011 has a CVSS v3 base score of 3.7 (LOW).

What is the EPSS score for CVE-2025-6011?

CVE-2025-6011 has an EPSS score of 0.32% (24th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-6011?

Upgrade Hashicorp Vault to 1.18.12 or later.

CVE & CISA-KEV Catalog

CVE-2025-6011

LOW

3.7

CVSS v3

NVD

Description

A timing side channel in Vault and Vault Enterprise’s (“Vault”) userpass auth method allowed an attacker to distinguish between existing and non-existing users, and potentially enumerate valid usernames for Vault’s Userpass auth method. Fixed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23.

CWE-203

How to fix

Remediation Available

Hashicorp VaultWindows application

Affected:1.17.0 1.18.12Fixed in:1.18.12HashiCorp, Inc.

Affected:1.16.23Fixed in:1.16.23HashiCorp, Inc.

Affected:1.20.1Fixed in:1.20.1HashiCorp, Inc.

Affected:1.19.0 1.19.7Fixed in:1.19.7HashiCorp, Inc.

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.32%probability of exploitation in 30 days

24thpercentile

Low risk: more likely to be exploited than 24% of all known CVEs.

References

Vendor Advisory1

discuss.hashicorp.com

Related Vulnerabilities

Other CWE-203 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-5753	Medium	5.6	94%	-	Fix
CVE-2003-0190	Medium	5.0	77%	-	Fix
CVE-2017-5715	Medium	5.6	74%	-	Fix
CVE-2018-3639	Medium	5.5	61%	-	Fix
CVE-2023-28770	High	7.5	58%	-	Fix
CVE-2004-1602	Medium	5.0	31%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-08-13.